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CaHeK987 [17]
1 year ago
10

Try to solve for x, i cant figure it out

Mathematics
1 answer:
snow_lady [41]1 year ago
5 0

Answer:

Step-by-step explanation:

From the upper isosceles triangle,

The answer is: x=±√5y [Note: If and only if at the lower triangle is NOT isosceles]

Exterior angle to the isosceles triangle = 2(2x^2 – 2x) [because the exterior angle of a triangle is equal to               the sum of two opposite interior angles]

Therefore, the exterior angle = 4x^2 – 4x

Also,

The exterior angle is equal to the sum of the two interior base angles of the lower triangle

Thus, 4x^2 – 4x=(3x^2+4x) + (5y – 8x)

By collecting like terms,

4x^2 – 3x^2 – 4x – 4x + 8x – 5y = 0

x^2 – 5y = 0

x^2 = 5y

By taking the square root of both sides

x=±√5y

Learn more about triangles at brainly.com/brainly.com/question/29069807

#SPJ1

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